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Old Dec 15, 2012, 08:27 AM
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United States, CA, Heber
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Guys,
I want to make sure I'm using the correct size connectors on my motor. I have 4mm connectors from motor to CC ICE lite 100A ESC and the connectors in question are the deans I currently have from the ESC to my 6S 5000 65C lipo.
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Old Dec 15, 2012, 09:28 AM
Jack
USA, ME, Ellsworth
Joined May 2008
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Falling back to the 3 Watts per gram rule of thumb, your 332 gram motor will have an input power of 996 Watts at it's continuous rating. With a 5S pack at 21V that works out to a load of about 47A on the battery connector and the Dean's Ultra is good for that. Most consider it to be a 60-65A connector.

So you have also some room to allow for the peak loads and full throttle bursts. Checking for warmth in the connector after some static runs is a good idea of course, that will also verify the soldering too.

On the 4mm bullets on the motor connectors, those do not have to handle the full 45-65A load. They only have to handle about 1/3rd of the total current draw at the most so they should be good too. Again, a check for warmth/heat in static testing is a good idea.

Jack
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Old Dec 17, 2012, 05:03 AM
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Paul - you can run this motor on 5s with a smaller prop. I run mine with a 13 x 10 and that produces 1000 watts which is plenty. Look back to the first few pages as I put up some test results with different props.
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Old Dec 17, 2012, 10:18 AM
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hillsboro Oregon
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This motor performs great!, as long as you dont push the limits...I am running this motor on 6s 40c 3300 turnigy with a 100 amp esc opto. My plane is a Suhkoi 55" about 6.5 lbs...pulls this thing vertical all day long. Im runnin a 15*7 apc keeping the amps around 70-75 and 1600+ watts...battery is heat is acceptable no puffing and the motor is a little warm after about a 6 minute flight. Now I dont run it full throttle by any means, mostly half throttle and occasionall burst
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Old Dec 17, 2012, 12:20 PM
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im only ltd in watts as my esc is 70 amp in my angel, but its so light 1000 watts takes it vertical no probs on a 13 x 10 and the power out put is smooth as silk.

after 7 min flight the motor was cool to touch the batt was luke warm.

now im converting a donated 20 year old acro wot to electric with the same motor, but ill prop up and will be using a 90amp plus esc as this plane is built like a tank and will need the extra grunt.
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Old Dec 19, 2012, 05:36 PM
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I ordered another prop shaft because I thought it was just the shaft bent slightly (never used off the bench yet)
IMG 0150 (0 min 16 sec)


but today I spun the motor without the shaft and I think I see a slight wobble at low speeds that originally lead me to believe the shaft prop shaft was the problem.

I separated the motor today and the magnets seems ok, there was some blue material in between a few magnets, and I wasn't sure it was something the manufacture put there or possible some run-off of blue loctite. Seemed a little excessive and I don't remember going overboard with the loctite. I'll try to post another video without the prop to show you what I mean. (Looking for camera mount for tripod)
What size are the bearings, so I can order some Arcer?
Also, I need a new snap ring, what size do I need to get?

motor (0 min 32 sec)
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Old Dec 20, 2012, 11:55 AM
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USA, CO, Dacono
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The Blue stuff is Balancing putty, all my NTM's have this stuff...
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Old Dec 30, 2012, 05:09 AM
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Received my 2nd 50/50 motor and hooked it up with the turnigy plush 80amp esc.

When I got to about 3/4 throttle, it pulsed like it was changing gear, then again as it hit full power?

I can't remember my last one doing this, so I checked timing on esc through the programming card and its set to low. I changed it to high, powered up and the same thing happened but more exaggerated so I switched it back to low timing.

Any ideas? Is it the esc?
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Old Dec 30, 2012, 07:24 AM
Jack
USA, ME, Ellsworth
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Without a prop on?

LVC kicking in because of voltage drop under load?

Over current protection?

Jack
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Old Dec 30, 2012, 08:03 AM
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This is without prop on, slightly odd?
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Old Dec 30, 2012, 08:38 AM
Jack
USA, ME, Ellsworth
Joined May 2008
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If you have a watt meter you get the whole story, volts and amps. So that will usually clarify the load and voltage questions.

A bigger motor like that might draw 2-3A at full throttle without a prop on but it should just run up to full RPM smoothly and quietly otherwise.

Get it running at a low RPM and jiggle each connector and the wires where they enter the motor, see if maybe there is a poor solder joint or connection.

Jack
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Old Dec 30, 2012, 09:04 AM
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Cheers jack ill try that and let you know.
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Old Dec 30, 2012, 01:04 PM
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I'm on my second one too, still waiting for HK to rule defective for the second time. The second motor hasn't pushed my bird around yet (waiting on some balsa stock to construct battery compartment) but on the bench it's peachy king.

That sounds weird to me, I'm no motor expert but your motor should have a continuous smooth acceleration through the RPM's. this leads me to believe the problem may be with the ESC. Seems you are getting a jolt of juice somewhere in the power delivery curve.
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Old Dec 30, 2012, 03:34 PM
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I agree Jk, funny though its a turnigy plush with a turnigy motor?! Ill test on my angels esc (power hd), and also another one of my packs to rule that out as well.
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Old Dec 30, 2012, 08:59 PM
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check the magnets as well, just a guess but if there's one askew it could cause overlap timing problems (if that makes sense)
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